Dressing



Patented Apr. :24, 1928.

ERNEST J. SCHELLING, or TOLEDO, 01-110.

DRESSING.

Ito Drawing. i

This invention relates to compounds for treating friction and gripping surfaces.

This invention has utility for maintaining utility of power transmission belting and is especially useful in reclaiming the gripping action of brake band linings. The composition of matter herein preferably comprises castor oil 19 parts and lard oil 1 part by volume. The two oils are agitated'together at a temperature preferably just below their boiling point, which is above 212 F. at normal atmospheric pressure. It has been found the oils as herein handled at these proportions have atendency when heat is applied to combine readily in producing a homogeneous product which does not separate upon'cooling. Boiling of the mixture is not detrimental to the resulting composition nor does it tend to break up this product after it has once been prepared.

Leather belting in its use collects grease,

dirt and other foreign substances which greatly decrease its efliciency and allows the belt to slip thus causing excessive heat wh ch destroys the pliability and usefulness of the belting. The composition herein disclosed may be sparingly applied to the wear surface of thebelting. This product loosens the foreign materials and body thereby restoring the gripping action andadding life to the belt itself.

This composition is especially adapted to be used on brake linings of motor vehicles; The average brake lining 1s manufactured from closely Woven non-con'ibustible fabric as asbestos. As the brake lining is used, dirt and other foreign matter collects on the wear surface and the pressure to which the lining is subjected against the brake drum face, causes the brake liningto become coated with a hard almost metallic covering and the fabric to become impregnated with detrimental matter; From such causes the decrea sed; However, the

softens the belt Application filed January 12, 1925. Serial No. 1,948.

brakes tend to losetheir gripping power thus heating up toga degree tending to detract from the life and utility thereof. The composition herein disclosed is composed of vegetable and animal oils, and when applied to the brake band surface, causes this hard coating to loosen up,-and such cleansing action penetrates even into the lining itself.

The composition of matter hereindisclosed not only cleanses the lining, but makes it pliable, expands the fibre to its original thickness and gripping power. The composition retains its cleansing and,

penetrating qualities for extei'ided-periods in its use asa dressing.

It has been found that variation in the v proportions of the ingredients to any marked degree greatly decreases the efiiciency of thecomposition. That is, if the proportion of vegetable oil is increased, the lasting usefulness is decreased'while if the animal oil is increased, the holding or traction effort is maximum efli ciency of penetration, cleansing, and sealing or permanenceare reached in the approxi mation of the disclosed proportions.

Heat will not deteriorate this composition as a dressing and due to this factit can be safely used even on tight brake bands where heat is created by their use.

The dressing may be colored by the addition of iodine or other coloring substance and the odor may be hidden by the addition of a minute quantity'of essential oil.

lVhat is claimed and it is desiredto secure by Letters Patent is i A brake band dressing composed of approximately 95% castor oil and 5% lard oil by volume. i

In witness whereof I ailiX my signature.

ERNEST J. SCHELLING. 

